SU739624A1 - Time pick-up for training device - Google Patents

Description

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The present invention relates to automation and telemekanka h can be used in automated systems for controlling knowledge and training in adaptive time sensor devoted to preparing a response or studying the dose of educational material, as well as in control systems that require adjustment of the conversion factor. pulses. to

One of the known time sensors contains a generator of synchronizing pulses, which is connected to the first inputs of the first and second elements, the outputs of which are connected to the inputs of the first and second calculators, the output of the first reference device is connected to the control trigger input, and the output of the first trigger. are connected to the second inputs of the first and second elements AND, respectively, to the coincidence elements, the OR element and the shift register, the output of the control trigger of the subconnect to

"The clock input of the register, the first inputs to the coincidence elements are connected to the outlets of the double counting device; to the second control trigger input

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A disadvantage of this device is its slope.

The closest technical solution to the invention is a time sensor, in KotbpbW, the input bus for setting the conversion factor is connected to the input of the logic node, the outputs of which are fed to the single inputs of the register trigger, the outputs of the trigger

20 are connected to the first inputs of the matching circuits, the second inputs of which are connected to one of the outputs of the logic node, the outputs of the matching circuits are fed to the single inputs of the trigger trigger, the sum of which is connected to the output of the clock generator, and the output of the higher bit Yes, the counter, which is the output of the sensor, is connected to the second input of the logic node.

The disadvantages of this sensor are the necessity of converting the decimal code of the conversion factor into a dual additional code {executed by the logical node); the need to memorize the binary additional code of the conversion factor (performed by the memory register); the need to write at each new cycle of operation of the binary additional code of the recalculation factor into the sensor (performed by the bit elements AND); the duration of the output signal is different for different conversion factors.

All this complicates the sensor and reduces the reliability of its functioning.

The purpose of this invention is to simplify the sensor and increase the reliability of its operation.

The goal is achieved by the fact that a time switch, containing a clock pulse generator connected to a counter, is inserted in series with a conversion factor switch, an encoder, AND-OR elements, a prohibition element, a delay element, and an OR element connected to the device input and to the counter input , the clock pulse generator is connected to the prohibition element, which is connected to the output of the device, the counter outputs are connected to the Corresponding inputs of the AND-OR elements.

The drawing shows schematically a time sensor comprising a clock pulse generator 1, the output of which is connected to the summing input of counter 2, consisting of flip-flops 3, a switch 4 of the scaling factor, the outputs of which are connected to the inputs of the encoder 5, elements AND-YLI 6, the outputs of which are connected to the inputs of the prohibition element 7 connected to the generator 1, the delay element 8, the input of which is the output of the prohibition element 7, the element OR 9, the first input of which is connected to the output of the delay element 8, and the second input 10 of the element OR 9 is the input of the initial reset of the sensor, the output of the element 9 is connected to the reset input of the counter 2.

The time sensor works as follows.

The value of the conversion factor is set by switch 4, the encoder 5 converts the value of the conversion factor into a binary code. The outputs of the encoder 5, corresponding to the unit and zero values of each bit of the binary code of the conversion factor, arrive at the first inputs of the corresponding AND-OR 6 logical elements, the second inputs of which receive signals from the unit and zero outputs of the counter triggers. corresponding to the value of this bit, will be prepared for opening by a signal from the output of the encoder 5, and the other half will be closed. When the counter is full, the outputs of the AND-OR 6 elements will appear. At the moment when the number of pulses in the counter 2 is equal to the recalculation factor, the outputs of all the elements of ILI 6 are sent to TC signals and, after finishing the generator 1 pulse, the prohibition element 7 is triggered, a signal appears at the sensor output. The same signal arrives at the input of the delay element 8 and after the time required for the delay at the output of element 8, a signal is received which, through the element OR 9, resets the counter 2 to the initial position, preparing the sensor for the next work cycle. The input of element 9 is intended to signal the initial reset of the sensor to its original position.

If necessary, changing the position of the switch 4, you can set a different conversion factor, and, therefore, the sensor will emit pulses of a different frequency.

In such a time sensor, the scaling factor is converted only to the forward binary code, eliminating the need to memorize the code of the scaling factor and record it in each cycle in the counter. The logical node is simplified and the memory register is removed, which in turn increases the reliability of the sensor. The duration of the output signal of the proposed sensor is constant and is determined by the value of the delay time of the element 8.

Claims (2)

Invention Formula A time sensor for a training device, comprising a clock pulse generator, connected to a counter, characterized in that, in order to simplify the sensor, it comprises a series-connected scaling factor switch, an encoder, AND-OR elements, a prohibition element, a delay element, and an OR element to the device code and to the counter input, the clock pulse generator is connected to the prohibition element, which 7 is connected to the device output, the counter outputs are connected to the corresponding inputs of the AND-OR elements. Sources of information taken into account during the examination 1. USSR author's certificate N9 547031, cl. H 03 K 3/82, 1976. 2. USSR Author's Certificate No. 45О224, cl. Q 09 B 7/02, 1976 (prototype).